non-communicative       
adjective (also noncommunicative) uk/ˌnɒn.kəˈmjuː.nɪ.kə.tɪv/ us/ˌnɑːn.kəˈmjuː.nə.keɪ.tɪv/ /ˌnɑːn.kəˈmjuː.nɪ.kə.t̬ɪv/
 不愿沟通的;不乐意提供资讯的
not willing to talk to people and give them information
  My stepfather was a shy and non-communicative person.  我的继父是一个害羞、不善交际的人。 
 She would rage and shout one minute and then become silent and noncommunicative the next.
  - More examples
 - My fourteen-year-old son is going through a highly non-communicative stage of his life.
 - She has become anxious, non-communicative, and prone to sudden violent outbursts.
 - The board is looking to replace the bumbling, non-communicative chief exectutive.
 - He had a bitter and noncommunicative relationship with the team leader.